G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 6/26 (2006.01) G02B 26/02 (2006.01)
Patent
CA 2091013
ABSTRACT A continuously variable fiber optic attenuator 10, 110 particularly for attenuating single mode fibers, has means 20, 120 for supporting a section 25, 125 of an optical fiber 24, 124 substantially along the length of the section 25, 125 and means 22, 122 for bending at least a portion of the supported optical fiber section 25, 125 in a controlled manner for attenuating light passing through the optical fiber 24, 124. Preferably, the support means 20, 120 comprises a deformable support means such as a spring 15, 115 or an elastomeric body 71 for supporting the optical fiber 24, 124 as it is bent. Most preferably, the deformable support means supports a section 25, 125 of optical fiber 24, 124 formed in one or more loops around the deformable support means, and the bending means is a plunger 22, 122 movable to an extended position pressing against the support means 20, 120 to bend portions of the loops of optical fiber 24, 124 in a controlled manner. The fiber optic attenuator 10, 110 of the present invention provides accurate control over the amount of attenuation of the light passing through the fiber 24, 124 without damaging the optical fiber 24, 124 or the signal passing therethrough. 15284A CA
Caron Bernard George
Hoffer John Carey
Lewis Warren Hale
Powers Gregory Brent
Smart & Biggar
Whitaker Corporation (the)
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